Wire die viewer



June 1963 P. L. DAMASKA 3,094,416

WIRE DIE VIEWER Filed Ray 23, 1960 3 Sheets-Sheet 1 v V INVENTOR.

Q mUL L. DAMAjK-q ATTORNEY June 18, 1963 P. L. DAMASKA WIRE DIE VIEWER 3 Sheets-Sheet 2 Filed May 23, 1960 IN V EN TOR.

June 18, 1963 P. 1.. DAMASKA WIRE DIE VIEWER I5 Sheets-Sheet 3 Filed May 25, 1960 4 M 0 L L u m A 7- roexve y United States Patent Ofiice 3,094,416 Patented June 18, 1963 3,094,416 WIRE DIE VIEWER Paul L. Damaska, Proctor Star Rte., Williamsport, Pa. Filed May 23, 1960, Ser. No. 31,142 3 Claims. (Cl. 88-14) This invention relates to a wire die viewer and it consists in the constructions, arrangements and combinations herein described and claimed.

It is the cardinal object of the invention to provide a simple and quick means for inspecting wire drawing dies for detection of any imperfections; to inspect the dies that have been polished; :to view the smoothness of the approach angle or reduction area; to determine the amount of cut in thousands to bring the bearing length to onequarter the diameter of the size; as well as to View the back relief, if found necessary.

More specifically, it is an important object of the invention to provide a compact means for removable support of a die to be inspected having means for rotating the die chuck before a magnifying lens as well 'as adjusting the chuck with respect to the lens, as will be required when viewing different sizes of dies, and also including a lighting means, the light from which is reflected on the interior surface of the die at such angle as to readily disclose any defects in the die.

Additional objects, advantages and features of invention will be apparent from the following description, considered in conjunction with the accompanying drawings, wherein,

FIGURE 1 is a perspective view of the viewing device,

FIGURE 2 is a perspective view of the magnifying lens mount.

FIGURE 3 is a cross section taken on the line 33 of FIGURE 1.

FIGURE 4 is a transverse cross section taken on the line 4-4 of FIGURE 3.

FIGURE 5 is a vertical section taken on the line 5-5 of FIGURE 4, and

FIGURE 6 is a perspective view illustrating the various parts in a separated state.

Referring more particularly to the drawings, there is illustrated a die viewer generally indicated by the reference character 10 comprising a suitable housing 11, the top wall 12 of which has a wall portion 13 formed at an angle to the front wall 14 and is provided with a suitable medially positioned flanged opening 15 for mounting of a frame 16 for support of a lens, and since the latter must be replaceable to obtain proper magnification, the frame is only frictional'ly retained in the flanged opening of the wall, the frame being removable by means of handles 17.

The left hand side wall 18 of the housing has an exteriorly mounted switch 19 and further is provided with a substantial opening 20 permitting access to the interior of the housing, for a purpose presently to be explained.

Within the housing 11, adjacent the front wall 14, a pedestal 21 is suitably secured upon a base 22, which as here shown is detachably connected within the walls constituting the housing. Upon and secured to the base 22 there is a support member 23 positioned in the vertical medial axis of the housing having a rearwardly inclined face 24 (see FIGURE 3) and as better seen in FIGURE 5, the support member 23 is formed with a pair of threaded openings 25 for mounting of a dove-tailed plate 26, by means of screws 27 complemental to the openings 25 of the support member.

The opposed jaws 28 of the dove-tail plate 26 receive complemental side walls 29 of an adjustable plate 30, the plate being held in adjusted positions by means of screws 31 engaged through threaded openings 32 formed in the jaws 28 so as to impinge upon a pressure plate 33 to provide a required friction to maintain adjustment of the plate 30.

The plate 30 constitutes the main support for the viewing apparatus as will presently appear, and comprises a pair of upright spaced ears 34 positioned in the medial longitudinal axis of the plate and between these ears a block 35 is pivotally mounted by means of a bolt 36, the block being suitably secured to a cylindrical sleeve 37 preferably by countersunk screws so as to provide a smooth interior surface.

A rack bar 38 is secured to the top surface of the adjustable mounting plate 30 extending forwardly of the housing and positioned in the medial longitudinal axis of the plate, and in order that adjustment of the plate may be attained exteriorly of the housing, a gear 39 is employed. The pedestal 21 has a bearing 40 at the upper end thereof for rotatably supporting a shaft 41, upon the inner end of which the gear 39 is secured so located as to effect a meshed engagement between the rack and the gear. The shaft 41 is of a length to extend through the right hand side wall, 18' of the housing and has secured upon the end thereof an operating knob 42. By this construction, the plate 30 and associated parts may be adjusted longitudinally of the dove-tail plate 26.

In order that complete inspection of a die may be accomplished, the die is to be rotated, and this is attained by an electric motor generally indicated at 43. The motor comprises a base 44 which is preferably welded to the upper periphery of the sleeve 37, as indicated at 45. The motor further includes a pair of spaced brackets 46 arranged parallel with the longitudinal axis of a worm gear 47 carried by the motor shaft 48. The brackets 46 are each formed with a bearing 49 arranged in aligned opposed relation for support of a shaft 50. The shaft 50 has keyed or otherwise secured thereto a gear 51 in mesh with the worm gear 47 for rotating the shaft 50 upon energization of the motor. The shaft 50 is of a length to extend beyond one of the bearings 49 and has secured thereto a pulley 52 for a purpose presently to be expl-ained.

The assembly of the die chuck will now be dealt with,

reference being had particularly to FIGURES 3, 5 and 6.,

The sleeve 37 mounts a bearing 53 therewithin, the hearing 53 having a bore 54 of a diameter to rotatably receive a tubular extension 55 integrally formed with a head 56 forming a shoulder in abutting relation with the adjacent end of the sleeve 37. The tubular extension is of a length to extend beyond the bearing 49 and has fixed thereon a pulley 57. Power is transmitted from the motor 43 to the tubular extension 55 by means of a belt 58 trained about the pulleys 52 and 57.

With reference to FIGURE 5, it will be seen that the die chuck 59 is detachably mounted upon the outer face of the head 56. The chuck 59 has an annular recessed seat 60 for receiving the die holder 61, the latter being readily removable therefrom as will be explained.

In order to provide illumination for inspecting a die supported in the die chuck 59, a suitable metallic tube 62 is employed, through which the electrical wires 63 have been threaded and electrically connected to a socket for support of a bulb 64. The tube is bent into substantially U-shaped formation, one leg 65 of which is passed through the open end 66 of the sleeve 55. The tube 62 is preferably welded to the outer periphery of the sleeve 37 as indicated at 67, for support purposes, and the leg 65 is given an inclination, as best seen in FIGURE 5, so that the light rays emanating from the bulb 64 will strike the die 68 at a desirable angle for observation through the magnifying lens 69.

The wires 63 of the lighting means and the wires 70 of the motor are electrically connected with the switch 19 and a source of electrical power so as to 'be energized 9 do simultaneously, althoughv if desired, separate switches may be employed for each of the devices.

The face 24 of the mounting block 23 is formed at an angle of. 90 and: consequently the inspectionrnechanism supported on said block will be at the same angle, presenting the diev chuck 59- at right angles to the. magnifying lens. 69.

The operation of the viewer will be substantially as follows:

Upon operation of the switch to the on position, the motor 43 and the light. 64 will be energized. The motor will. rotate the sleeve 55 by means of the pulleys 52, 57 and belt 58 at a speed of 6 r.-p.m. and a corresponding rotation is given the die chuck. The operator now places the die to be. inspected in the seat 60 of the chuck, access to the chuck being obtained through the opening 20 of the housing, and likewise the die may be removed from the chuck after inspection.

If the focus between the die and the magnifying lens is to be changed, as will be required in viewing diiferent sized dies, this is accomplished by rotating the knob 42 in the proper direction to move the die chuck toward or away from the lens, which is effected through the rack bar 38 and gear 39.

As the power of the lens employed will vary according to the size of die being tested, the lens and frame 16 is readily removed for replacement of the desired lens.

While I have shown and described a, preferred construction of the viewer, this is by way of illustration only, and I consider as my own all such modifications in construction as fairly fall within the scope of the appended claims.

I claim:

1.. A device for inspecting wire drawing dies comprising a housing. having an inclined wall, a view opening being formed in said inclined wall, a base member mounted upon the bottom wall. of the housing, said base member having a face inclined upwardly in the. direction of the view opening, a channel member fixed to said inclined face, and slidably supporting an adjustable plate, a cylinder positioned on said. plate and said cylinder being provided with an interior bearing member, an elongated sleeve rotatab'ly supported in said bearing member, a die chuck on one end of the sleeve for support of the die and positioned in line with. said view opening, illuminating means within the sleeve for directing rays of light upon said die, motor means operatively connected to said sleeve for rotating said sleeve and die, means for advancing and retracting said adjustable plate toward and away from said view opening and a magnifying lens mounted in said view opening.

2. A device for inspecting wire drawing dies comprising a housing having an inclnied wall, a view opening formed in said inclined Wall, a base member mounted upon the bottom wall of the housing, said base member having a face inclined upwardly in the direction of the view opening, a channel member fixed to said inclined face and slidably supporting an adjustable plate, a cylinder mounted on said plate and having an interior bearing member, an elongated sleeve rotatably supported in said bearing member, said sleeve having a pulley at one end thereof, a die chuck on the other end of the sleeve for support of the die and positioned in line with said view opening, illuminating means within the sleeve for directing raysof light upon said die, a motor mounted on said cylinder, said motor having a driven shaft, aworm gear fixed. to said shaft, said motor further having a shaft positioned transversely of said worm gear, said shaft having a gear in mesh with said worm gear, a pulley fixed to one end of said shaft and aligned with the pulley of said elongated sleeve, a belt trained about said pulleys, means for advancing and retract said adjustable plate toward and away from said view opening and a magnifying lens mounted in said view opening.

3. The structure of claim 2, in which the means for advancing and retracting said adjustable plate comprises a rack bar on said plate, a pedestal within the housing and having a bearing, a shaft journ-alled in said bearing and extending exteriorly of the housing, an operating knob fixed to one end of the shaft, the other end of said shaft having a gear in mesh with said rack bar.

References Cited in the file of this patent UNITED STATES PATENTS 2,340,893 Meister Feb. 8, 1944 2,433,558 Hurley Dec. 30, 1947 2,441,343 Becker May 11, 1948 2,444,639 Elder g July 6, 1948 2,476,312 Luety July 19, 1949 2,750,519 Sum-merhayes et a1 June 12, 1956 2,794,362 Yale June 4, 1957 2,899,747 Weir I. Aug. 18, 1959 OTHER REFERENCES Magnifier, Scientific American, October 1941, page 222. 

1. A DEVICE FOR INSPECTING WIRE DRAWING DIES COMPRISING A HOUSING HAVING AN INCLINED WALL, A VIEW OPENING BEING FORMED IN SAID INCLINED WALL, A BASE MEMBER MOUNTED UPON THE BOTTOM WALL OF THE HOUSING, SAID BASE MEMBER HAVING A FACE INCLINED UPWARDLY IN THE DIRECTION OF THE VIEW OPENING, A CHANNEL MEMBER FIXED TO SAID INCLINED FACE, AND SLIDABLY SUPPORTING AN ADJUSTABLE PLATE, A CYLINDER POSITIONED ON SAID PLATE AND SAID CYLINDER BEING PROVIDED WITH AN INTERIOR BEARING MEMBER, AN ELONGATED SLEEVE ROTATABLY SUPPORTED IN SAID BEARING MEMBER, A DIE CHUCK ON ONE END OF SLEEVE FOR SUPPORT OF THE DIE AND POSITIONED IN LINE WITH SAID VIEW OPENING, ILLUMINATING MEANS WITHIN THE SLEEVE FOR DIRECTING RAYS OF LIGHT UPON SAID DIE, MOTOR MEANS OPERATIVELY CONNECTED TO SAID SLEEVE FOR ROTATING SAID SLEEVE AND DIE, MEANS FOR ADVANCING AND RETRACTING SAID ADJUSTABLE PLATE TOWARD AND AWAY FROM SAID VIEW OPENING AND A MAGNIFYING LENS MOUNTED IN SAID VIEW OPENING. 